Fantaisie.
ETYM French caprice, Italian capriccio, caprice (perh. orig. a fantastical goat leap), from Latin caper, capra, goat. Cf Capriole, Cab, Caper.
A sudden desire; SYN. impulse, vagary, whim.
Informal terms for insanity; SYN. daftness, flakiness.
ETYM Cf. French extravagance. Related to Extravagant, Extravaganza.
1. Excessive spending; SYN. prodigality, lavishness.
2. The trait of spending extravagantly; SYN. prodigality, profligacy.